[development] Usability issues

In order to collect all usability issues in one queue and to focus the usability efforts, all core usability issues have been re-organized. During the documentation sprint in Szeged last sunday, the active User experience issues have been moved to the Usability component of the Drupal project issue queue. And further 'Usability' titled issues from other core components have been moved to the Usability component too. Please file you new core usability issues in the Drupal project issue queue under the Usability component Regards, Erik Stielstra